Last in a daily series of stories about the best players at every position leading up to the NFL Draft Thursday-Saturday.

Cornerbacks Quentin Jammer and Antoine Cason are expected to start for the Chargers in 2012.

What the next years will look like, however, is a bit unsettled.

Jammer, in 2006, signed a five-year extension set to expire after the upcoming season. Same goes for the five-year rookie deal Cason inked in 2008.

Given the uncertainty of their futures and the March release of slot cornerback Dante Hughes, San Diego could be open to adding a fifth cornerback to its roster during this week’s draft.

It’s a deep class from which to choose.

On Tuesday, NFL Network draft analyst Mike Mayock released his top-100 draft board, and 13 cornerbacks made the cut.

Morris Claiborne is head of the pack.

He’ll likely become the second LSU cornerback to be drafted in the top five in as many years. In 2011, the Cardinals chose Patrick Peterson fifth overall.

But Claiborne could be taken even earlier.

The Vikings, who have the third pick, are reportedly interested in the junior, who won the Jim Thorpe Award, given to the nation’s top defensive back, last year.

Mayock ranks Stephon Gilmore, of South Carolina, at No. 8 on his board and Alabama’s Dre Fitzpatrick at No. 27.

If talent alone was all teams valued, Janoris Jenkins would be giving them company.

The former second-team All-American at Florida was dismissed from the program in April 2011 after being twice arrested on misdemeanor marijuana possession charges in a three-month period.

Jenkins also has been arrested for a bar fight.

The father of four finished his college career at North Alabama.

“I’m pretty sure it will hurt me,” Jenkins said of his arrests at the combine. “But I’m looking past that, looking forward to moving on and being successful from here on out … I’m done with (marijuana) forever, man. I can’t do it. It’s something I can’t let myself do again.”

The Chargers can still re-sign Cason or Jammer before their contracts expire.

Knowing the uncertainty ahead, the team made the position a draft priority last year, selecting Marcus Gilchrist and Shareece Wright in the second and third round, respectively.

Gilchrist made two starts in 2011 while Wright played mostly on special teams, seeing four defensive snaps.